Scent retaining structure, method of manufacturing the scent retaining structure, and scent providing device

ABSTRACT

The present disclosure provides a perfume retaining structure, a method of manufacturing the perfume retaining structure, and a scent providing device that can reduce ventilation resistance of air that passes through a space in which a perfume retainer is arranged. 
     The perfume retaining structure includes the perfume retainer, a retaining space in which the perfume retainer is arranged, and a first opening and a second opening that allow the retaining space to be opened to the outside. The retaining space has a ventilation area that faces the first opening and the second opening, and a retaining area that is arranged adjacent to the ventilation area and communicates with the ventilation area, and the perfume retainer is arranged in the retaining area.

TECHNICAL FIELD

The present disclosure relates to a perfume retaining structure, amethod of manufacturing the perfume retaining structure, and a scentproviding device.

BACKGROUND ART

Technologies relating to scent providing devices that provide scentshave conventionally been proposed. For example, Patent Document 1proposes a technology for providing a scent by supplying air to ahousing device that houses a perfume retainer and releasing vaporizedperfume by a flow of air. Specifically, Patent Document 1 discloses ascent providing device that includes a containment portion that containsa perfume retainer, and a releasing portion that releases the scent fromthe perfume retainer contained in the containment portion. The scentproviding device supplies air to the containment portion via acommunication hole and vaporize liquid perfume retained by the perfumeretainer while releasing the perfume with the air from the releasingportion.

CITATION LIST Patent Document

-   Patent Document 1: Japanese Patent Application Laid-Open No.    2014-67293

SUMMARY OF THE INVENTION Problems to be Solved by the Invention

However, in the scent providing device disclosed in Patent Document 1,an area through which air flows from the communication hole to thereleasing portion and an area in which the perfume retainer is retainedare not separated in the containment portion. Thus, an increase inventilation resistance of air that passes through the containmentportion is caused. Thus, there is a possibility that the flow velocityof the air that passes through the containment portion decreases and theflow rate of the released scent decreases.

Thus, the present disclosure provides a new and improved perfumeretaining structure, a method of manufacturing the perfume retainingstructure, and a scent providing device that can reduce the ventilationresistance of air that passes through a space in which a perfumeretainer is arranged.

Solutions to Problems

The present disclosure provides a perfume retaining structure thatincludes a perfume retainer, a retaining space in which the perfumeretainer is arranged, and a first opening and a second opening thatallow the retaining space to be opened to the outside. The retainingspace has a ventilation area that faces the first opening and the secondopening, and a retaining area that is arranged adjacent to theventilation area and communicates with the ventilation area, and theperfume retainer is arranged in the retaining area.

Furthermore, the present disclosure provides a method of manufacturingthe perfume retaining structure, including: producing a first case bodyprovided with the retaining space that has the ventilation area providedwith the first opening, and the retaining area that is divided from theventilation area by a first rib, arranged adjacent to the ventilationarea, and communicates with the ventilation area; storing the perfumeretainer or a base material of the perfume retainer in the retainingarea in the first case body; producing a case by attaching, to the firstcase body, a second case body that has a communication hole thatcommunicates with the retaining space in the first case body and asecond rib that is erected in the retaining space in the first casebody, the first rib and the second rib limiting movement of the perfumeretainer toward the ventilation area; and attaching, to the case, a casecover that has the second opening.

Furthermore, the present disclosure provides a scent providing deviceincluding: the perfume retaining structure that has the perfumeretainer, the retaining space in which the perfume retainer is arranged,and the first opening and the second opening that allow the retainingspace to be opened to the outside; and an air blowing source thatsupplies air to the retaining space, in which the retaining space hasthe ventilation area faced by the first opening and the second opening,and the retaining area that is arranged adjacent to the ventilation areaand communicates with the ventilation area, the perfume retainer beingarranged in the retaining area.

Effects of the Invention

As described above, according to the present disclosure, it is possibleto reduce the ventilation resistance of air that passes through a spacein which a perfume retainer is arranged.

Note that the effects described above are not necessarily restrictive.In addition to or in place of the effects described above, any of theeffects described in the present specification or other effects that canbe grasped from the present specification may be exerted.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a perspective view illustrating an appearance of a scentproviding device according to an embodiment of the present disclosure.

FIG. 2 is a perspective view of an axial cross section of the scentproviding device according to the same embodiment.

FIG. 3 is a perspective view illustrating an appearance of a perfumeretaining structure according to the same embodiment.

FIG. 4 is a front view of the perfume retaining structure according tothe same embodiment as viewed in the axial direction.

FIG. 5 is a rear view of the perfume retaining structure according tothe same embodiment as viewed in the axial direction.

FIG. 6 is an axial sectional view of the perfume retaining structureaccording to the same embodiment.

FIG. 7 is an exploded perspective view of the perfume retainingstructure according to the same embodiment.

FIG. 8 is a front view of a first case body of the perfume retainingstructure according to the same embodiment as viewed in the axialdirection.

FIG. 9 is an axial sectional view of the first case body of the perfumeretaining structure according to the same embodiment.

FIG. 10 is a circumferential sectional view of the first case body ofthe perfume retaining structure according to the same embodiment.

FIG. 11 is a front view of a second case body of the perfume retainingstructure according to the same embodiment as viewed in the axialdirection.

FIG. 12 is a side view of the second case body of the perfume retainingstructure according to the same embodiment.

FIG. 13 is a rear view of the second case body of the perfume retainingstructure according to the same embodiment as viewed in the axialdirection.

FIG. 14 is an axial sectional view of the second case body of theperfume retaining structure according to the same embodiment.

FIG. 15 is a front view of a case cover of the perfume retainingstructure according to the same embodiment as viewed in the axialdirection.

FIG. 16 is a side view of the case cover of the perfume retainingstructure according to the same embodiment.

FIG. 17 is a rear view of the case cover of the perfume retainingstructure according to the same embodiment as viewed in the axialdirection.

FIG. 18 is an axial sectional view of the case cover of the perfumeretaining structure according to the same embodiment.

FIG. 19 illustrates the first case body containing a perfume retainer asviewed in the axial direction.

FIG. 20 is a sectional view illustrating a configuration example of aretaining space.

FIG. 21 is a front view of a prism body of the perfume retainingstructure according to the same embodiment as viewed in the axialdirection.

FIG. 22 is an axial sectional view of the prism body of the perfumeretaining structure according to the same embodiment.

FIG. 23 is a block diagram illustrating an example of a systemconfiguration of the scent providing device.

FIG. 24 is a block diagram illustrating another example of the systemconfiguration of the scent providing device.

FIG. 25 is a perspective view of an axial cross section of the scentproviding device according to the same embodiment.

FIG. 26 is an explanatory view illustrating a rotation lock mechanism ofthe scent providing device according to the same embodiment.

FIG. 27 is an explanatory view illustrating operation of the rotationlock mechanism of the scent providing device according to the sameembodiment.

FIG. 28 is an explanatory view illustrating the operation of therotation lock mechanism of the scent providing device according to thesame embodiment.

FIG. 29 is an explanatory view illustrating the operation of therotation lock mechanism of the scent providing device according to thesame embodiment.

FIG. 30 is an explanatory view illustrating operation of a rotationrestricting mechanism of the perfume retaining structure according tothe same embodiment.

FIG. 31 is an explanatory view illustrating a second step of a perfumecartridge manufacturing method according to the same embodiment.

FIG. 32 is an explanatory view illustrating a third step of the perfumecartridge manufacturing method according to the same embodiment.

FIG. 33 is an explanatory view illustrating a fourth step of the perfumecartridge manufacturing method according to the same embodiment.

MODE FOR CARRYING OUT THE INVENTION

A preferred embodiment of the present disclosure will be described belowin detail with reference to the accompanying drawings. Note that, in thepresent specification and drawings, components having substantially thesame functional configurations are denoted by the same referencenumerals, and the description thereof will thus not be repeated.

Note that the description will be given in the following order.

1. Outline of scent providing device

2. Configuration example of perfume cartridge (perfume retainingstructure)

3. Configuration example of scent providing device

4. Method of manufacturing perfume cartridge (perfume retainingstructure)

In the following description, a direction to which a scent is blown maybe referred to as the front side or the front end side, and the oppositedirection may be referred to as the rear side or the rear end side.

<1. Outline of Scent Providing Device>

First, a brief description will be given on an outline of a scentproviding device according to the embodiment of the present disclosure.FIG. 1 is a perspective view illustrating an appearance of a scentproviding device 1 according to the present embodiment. FIG. 2 is anaxial sectional view of the scent providing device 1.

The scent providing device 1 according to the present embodimentincludes a perfume cartridge 200 and a device main body 700. The devicemain body 700 has a housing 710, and the housing 710 includes a battery810, an air pump 840, and a circuit board 820 that controls power supplyfrom the battery 810 to the air pump 840. The perfume cartridge 200 canbe attached to or detached from the front side of the device main body700. In the present embodiment, the perfume cartridge 200 corresponds toa perfume retaining structure.

The scent providing device 1 causes air to flow into a desired retainingspace 231 selected from a plurality of retaining spaces 231 (only oneretaining space 231 c is illustrated in FIG. 2 ) disposed in the perfumecartridge 200 to vaporize and release perfume retained by a perfumeretainer (not illustrated) arranged in each retaining space 231. Forexample, the scent providing device 1 causes air supplied from the airpump 840 to pass through the retaining space 231 in the perfumecartridge 200, thereby vaporizing liquid perfume or moist perfume(hereinafter collectively referred to as “liquid perfume”) and releasingthe perfume, together with air, from the retaining space 231.

The scent providing device 1 according to the present embodiment is usedas, for example, a device for releasing a scent into a limited range ofspace. For example, a user releases the scent from the scent providingdevice 1 once or a plurality of times near the user's face to getrelaxed. In this case, the scent providing device 1 releases the scentin a straight direction to prevent the scent from spreading widely, andthis prevents the scent to be perceived by people nearby. The scentproviding device 1 may be a portable device that can be carried by auser or may be a stationary device.

<2. Perfume Cartridge (Perfume Retaining Structure)>

Next, the perfume cartridge 200 as the perfume retaining structureaccording to the present embodiment will be described in detail.

FIGS. 3 to 7 are views for describing a configuration example of theperfume cartridge 200. FIG. 3 is a perspective view illustrating anappearance of the perfume cartridge 200. FIG. 4 is a front view of theperfume cartridge 200 as viewed in the axial direction from the frontside. FIG. 5 is a rear view of the perfume cartridge 200 as viewed inthe axial direction from the rear side. FIG. 6 is an axial sectionalview of the perfume cartridge 200, and is an arrow view of a crosssection taken along line I-I illustrated in FIGS. 4 and 5 . FIG. 7 is anexploded perspective view of the perfume cartridge 200.

The perfume cartridge 200 has a cylindrical appearance as a whole. Theperfume cartridge 200 has a plurality of (five in the presentembodiment) retaining spaces 231 a to 231 e (hereinafter collectivelyreferred to as the retaining spaces 231, in a case where it is notparticularly necessary to distinguish between them) for air suppliedfrom the air pump 840, which is an example of an air blowing source, topass through. Perfume retainers 251 that retain liquid perfume arearranged in the retaining spaces 231. The perfume may be, for example,an essential oil or an essential oil diluted with ethanol. One retainingspace 231 may be included, or a plurality of the retaining spaces 231may be included.

The perfume cartridge 200 according to the present embodiment includes acase 210, a case cover 150, and the perfume retainers 251. The case 210includes a first case body 211 and a second case body 100 fixed to thefront side of the first case body 211. The case cover 150 is attached tothe front surface of the case 210 so as to be axially rotatable. Theperfume retainers 251 retain liquid perfume and are arranged in thecorresponding plurality of retaining spaces 231 disposed in the case210.

The perfume cartridge 200 has, on the rear end surface, first openings221 a to 221 e (hereinafter collectively referred to as the firstopenings 221 in a case where it is not particularly necessary todistinguish between them) of the same number as the retaining spaces231. The first openings 221 allow the corresponding retaining spaces 231to be opened to the outside. In the present embodiment, the five firstopenings 221 a to 221 e, together with one pseudo hole 223, are arrangedat regular intervals of 60 degrees around the axis. Furthermore, theperfume cartridge 200 has a second opening 151 in the front end surface.The second opening 151 is disposed in the case cover 150. The case cover150 and the case 210 rotate relative to each other, and this allows thesecond opening 151 to selectively communicate with one of the pluralityof retaining spaces 231.

Therefore, the case 210 of the perfume cartridge 200 can be axiallyrotated by a certain rotation angle to switch which retaining space 231air should pass through. Perfumes retained in the retaining spaces 231may be all the same, or some or all of the perfumes may be differentfrom each other. In a case where all the retaining spaces 231 retain thesame perfume, a user can enjoy a favorite scent for a long period oftime. Furthermore, in a case where each retaining space 231 retains adifferent perfume, which scent to release can be switched by switchingwhich retaining space 231 air can be supplied into. Thus, for example,the scent can be switched depending on mood.

In the perfume cartridge 200 according to the present embodiment, thefive retaining spaces 231 are arranged at regular intervals of 60degrees, and one space serves as a pseudo space 232. The pseudo space232 is aligned with the second opening 151 of the case cover 150 in acase where the scent providing device 1 is not in use, so as not to letthe scent escape from each retaining space 231 in the perfume cartridge200. Note that the number of the retaining spaces 231 is not limited tofive. Furthermore, the retaining spaces 231 may not be positioned atregular intervals.

The perfume cartridge 200 has, on the outer peripheral surface, aprotrusion 212 that serves as a positioning element for fitting theperfume cartridge 200. The protrusion 212 is formed by a protrusion 113of the second case body 100 and a protrusion 213 of the first case body211 that are continuously disposed, and has a predetermined length alongthe axial direction.

The perfume cartridge 200 includes, on the outer peripheral surface onthe rear end side, recesses 217 of the same number as the plurality ofretaining spaces 231 and the pseudo space 232 combined. In the presentembodiment, the plurality of recesses 217 is disposed at regularintervals of 60 degrees in the circumferential direction. The pluralityof recesses 217 is disposed at positions corresponding to positions ofthe first openings 221 and the pseudo hole 223 disposed in the rear endsurface. The recesses 217, which engage with an engagement elementincluded in the device main body 700, have a function of fixing the case210 at a predetermined rotation position and giving a user a rotationaloperation feeling. Note that the plurality of recesses 217 is onlyrequired to be disposed in the circumferential direction at the samephase intervals as the first openings 221 and the pseudo hole 223. Therecesses 217 may not be disposed at regular intervals, or may not bealigned with the positions of the first openings 221 and the pseudo hole223.

A label 255 is affixed to, excluding the protrusion 213, the outerperipheral surface of the first case body 211 positioned in a centralportion in the axial direction of the perfume cartridge 200. The label255 shows, for example, information regarding the scent of each of theperfume retainers 251 arranged in the corresponding retaining spaces231. Note that the label 255 may not be included.

The perfume cartridge 200 will be described below in detail on acomponent-by-component basis.

(First Case Body)

FIGS. 8 to 10 are views illustrated for description of the first casebody 211. FIG. 8 is a front view of the first case body 211 as viewed inthe axial direction from the front side. FIG. 9 is an axial sectionalview of the first case body 211, and is an arrow view of a cross sectiontaken along line II-II in FIG. 8 . FIG. 10 is a circumferentialsectional view of the first case body 211, and corresponds to asectional view at line illustrated in FIG. 9 . Note that a rear view ofthe first case body 211 as viewed in the axial direction from the rearside coincides with a rear view of the perfume cartridge 200 illustratedin FIG. 11 .

The first case body 211 has a cylindrical outer shape in which thelength in the axial direction is longer than the diameter. An axial hole215 that has openings on both end sides in the axial direction isdisposed in a central portion of the first case body 211. Around theaxial hole 215, the plurality of (five in the present embodiment)retaining spaces 231 and the pseudo space 232 are disposed around theaxis at predetermined intervals (at regular intervals of 60 degrees inthe present embodiment). The plurality of retaining spaces 231 and thepseudo space 232 each has a fan-like circumferential cross-sectionalshape.

The plurality of retaining spaces 231 and the pseudo space 232 each hasan opening on the front side of the first case body 211. Furthermore,the rear sides of the plurality of retaining spaces 231 are opened tothe outside via the corresponding first openings 221, while the rearside of the pseudo space 232 is closed. The plurality of retainingspaces 231 has first ribs 235 a to 235 e (hereinafter collectivelyreferred to as the first ribs 235 in a case where it is not particularlynecessary to distinguish between them) that are formed to divide a rearend portion of each retaining space 231 in the circumferentialdirection. In each retaining space 231, the first opening 221 isarranged on one side of areas divided in the circumferential directionby the first rib 235. Thus, the plurality of first openings 221 is alsoarranged at regular intervals of 60 degrees around the axis so as tocorrespond to the positions of the retaining spaces 231.

The protrusion 213 having a predetermined length along the axialdirection is disposed on the outer peripheral surface of the first casebody 211, at a position corresponding to an outer peripheral portion ofthe pseudo space 232. A hole 227 that communicates between the outerperipheral surface of the first case body 211 and the pseudo space 232is disposed adjacent to the front side of the protrusion 213. The hole227 like this, together with an engagement projection (117) of thesecond case body 100, has a function of fixing the first case body 211and the second case body 100. The hole 227 may be a recess that does notreach the pseudo space 232. A plurality of the holes 227 may be disposedat different phase positions.

A recess 229 is disposed on the outer peripheral surface of a front sideend portion of the first case body 211, in a portion positioned at aboundary between the pseudo space 232 and the retaining space 231 e. Therecess 229 like this, together with a ridge 119 of the second case body100, has a function as a positioning element for assembling the firstcase body 211 and the second case body 100. The ridge may be disposed onthe first case body 211, and the recess may be disposed on the secondcase body 100.

(Second Case Body)

FIGS. 11 to 14 are views illustrated for description of the second casebody 100. FIG. 11 is a front view of the second case body 100 as viewedin the axial direction from the front side. FIG. 12 is a side view ofthe second case body 100. FIG. 13 is a rear view of the second case body100 as viewed in the axial direction from the rear side. FIG. 14 is anaxial sectional view of the second case body 100, and is an arrow viewof a cross section taken along line Iv-Iv in FIGS. 11 and 13 .

The second case body 100 has a cylindrical outer shape in which thelength in the axial direction is shorter than the diameter. The outerperipheral surface of the second case body 100 is knurled, and isprovided with a plurality of fine grooves formed along thecircumferential direction.

An axial hole 111 that has openings on both end sides in the axialdirection is disposed in a central portion of the second case body 100.The axial hole 111 has a small-diameter portion 111 a on the front sideand a large-diameter portion 111 b on the rear side. In a state wherethe second case body 100 is attached to the first case body 211, theaxial hole 111 in the second case body 100 can be integrated with theaxial hole 215 in the first case body 211 to form one axial hole. Aroundthe axial hole 111, a plurality of (five in the present embodiment)communication holes 101 a to 101 e (hereinafter collectively referred toas the communication holes 101 in a case where it is not particularlynecessary to distinguish between them) each having openings on both endsin the axial direction is disposed. The plurality of communication holes101, together with one pseudo hole 103, is disposed around the axialhole 111 at regular intervals (at regular intervals of 60 degrees in thepresent embodiment). However, the communication holes 101 may not bepositioned at regular intervals.

In a state where the second case body 100 is attached to the first casebody 211, the plurality of communication holes 101 a to 101 ecommunicates with the retaining spaces 231 a to 231 e, respectively, andallows the retaining spaces 231 a to 231 e to be opened to the outside.The first openings 221 a to 221 e respectively disposed in the retainingspaces 231 a to 231 e and the corresponding communication holes 101 a to101 e in the second case body 100 are positioned in the same phasearound the axis. That is, the first opening 221 disposed in eachretaining space 231 is linearly connected with the correspondingcommunication hole 101 along the axial direction.

On the rear end surface of the second case body 100, second ribs 121 ato 121 e (hereinafter collectively referred to as the second ribs 121 ina case where it is not particularly necessary to distinguish betweenthem) are disposed adjacent to the corresponding communication holes 101a to 101 e. The second ribs 121 are erected so as to extend rearward,and are arranged in the retaining spaces 231 in the second case body 100in a state where the second case body 100 is attached to the first casebody 211. Furthermore, when the state where the second case body 100 isattached to the first case body 211 is viewed in the axial direction,the second ribs 121 of the second case body 100 are arranged to overlapthe first ribs 235 of the first case body 211. The second ribs 121 ofthe second case body 100 and the first ribs 235 of the first case body211 divide each retaining space 231 into an area facing thecommunication hole 101 and the first opening 221 (ventilation area A),and the remaining area in which the perfume retainer 251 is arranged(retaining area F) (see FIGS. 8 and 10 ).

The second case body 100 has, on the front side, a front-side recess 108that contains the case cover 150. Furthermore, the second case body 100has, on the rear side, a rear-side recess 109 that contains a front endportion of the first case body 211. The engagement projection 117 thatengages with the hole 227 in the first case body 211 is disposed on theinner peripheral surface of the rear-side recess 109. In the presentembodiment, two engagement projections 117 are disposed (see FIGS. 13and 14 ). Furthermore, the ridge 119 that is inserted into a recess 219of the first case body 211 is disposed on the inner peripheral surfaceof the rear-side recess 109.

When the second case body 100 and the first case body 211 are assembled,the second case body 100 and the first case body 211 are aligned usingthe ridge 119 and the recess 219 and are fixed using the engagementprojections 117 and the holes 227. At that time, in a state where thefront end portion of the first case body 211 is fitted in the rear-siderecess 109 of the second case body 100, the front end surface of thefirst case body 211 abuts against the bottom surface of the rear-siderecess 109 of the second case body 100, and the retaining spaces 231 ato 231 e are isolated from one another.

The protrusion 113 having a predetermined length along the axialdirection is disposed on the outer peripheral surface of the second casebody 100, at a position corresponding to an outer peripheral portion inwhich the pseudo hole 103 is arranged. In a state where the second casebody 100 is attached to the first case body 211, the protrusion 113 ofthe second case body 100 and the protrusion 213 of the first case body211 are continuously arranged and integrated to form the protrusion 212.

(Case Cover)

FIGS. 15 to 18 are views illustrated for description of the case cover150. FIG. 15 is a front view of the case cover 150 as viewed in theaxial direction from the front side. FIG. 16 is a side view of the casecover 150 as viewed laterally, and corresponds to a view of the casecover 150 illustrated in FIG. 15 as viewed from above. FIG. 17 is a rearview of the case cover 150 as viewed in the axial direction from therear side. FIG. 18 is an axial sectional view of the case cover 150, andis an arrow view of a cross section taken along line V-V in FIGS. 15 and17 .

The case cover 150 has a disk portion 153 and a cylindrical portion 155erected so as to extend rearward from the disk portion 153. Thecylindrical portion 155 has a hollow cylindrical shape having an openingon the rear end side. The cylindrical portion 155 is inserted into theaxial hole 111 in the second case body 100 and the axial hole 215 in thefirst case body 211. The disk portion 153 has a disk shape of anappropriate thickness. The disk portion 153 is contained in thefront-side recess 108 of the second case body 100. The case cover 150 isattached to the case 210 so as to allow relative rotation with respectto the case 210.

The case cover 150 has the second opening 151 that penetrates the diskportion 153 in the axial direction. In accordance with the relativerotation position of the case cover 150 with respect to the case 210,the second opening 151 can communicate with one of the plurality ofcommunication holes 101 formed in the second case body 100. That is, thesecond opening 151 allows one of the retaining spaces 231 to be openedto the outside in accordance with the relative rotation position of thecase cover 150 with respect to the case 210. An engagement protrusion159 that protrudes rearward is formed on the rear end surface of thedisk portion 153. The engagement protrusion 159 is a minute protrusionhaving a height of, for example, 0.15 to 0.3 mm, and is disposed at aposition where the engagement protrusion 159 can engage with thecommunication hole 101 in the second case body 100 (see FIG. 6 ).

The cylindrical portion 155 has a slit 155 a that extends in the axialdirection. A protrusion (a portion indicated by reference numeral 768 inFIG. 26 ) disposed on a fixed axle of a platform portion of the devicemain body 700 described later is inserted into the slit 155 a. Thecylindrical portion 155 has, at a bottom portion of a hollow internalspace, an engagement recess 157 formed by bulging on both sides of theinner peripheral surface of the cylindrical portion 155. An engagementportion (a portion indicated by reference numeral 769 in FIGS. 26 and 27) disposed at a front end portion of the fixed axle of the platformportion of the device main body 700 is inserted into the engagementrecess 157. The cylindrical portion 155 has two locking claws 156 formedin a rotationally symmetrical manner on the outer peripheral surface onthe front side. In a state where the cylindrical portion 155 of the casecover 150 is inserted into the axial holes 111 and 125 in the case 210,the locking claws 156 are arranged at the large-diameter portion 111 bof the axial hole 111 in the second case body 100 and are locked to astep portion between the small-diameter portion 111 a and thelarge-diameter portion 111 b (see FIG. 30 ). Therefore, the case cover150 does not easily come off the case 210.

(Perfume Retainer)

The perfume retainers 251 arranged in the corresponding plurality ofretaining spaces 231 each includes a base material, and the basematerial retains liquid perfume. For example, the perfume retainers 251may be retainers obtained by impregnating an impregnation material as abase material with liquid perfume. In this case, for example, a porousbody or a fiber body that includes polyester, nylon, felt, polyacetal,or the like may be used as the impregnation material. Furthermore, it ispreferable that the impregnation material has resistance to liquidperfume. The liquid perfume may be, for example, an essential oil or anessential oil diluted with ethanol. The perfume retainers 251 may retainthe same liquid perfume or different liquid perfumes for each retainingspace 231.

Each perfume retainer 251 is arranged in the retaining area F in theretaining space 231 in the case 210 (see FIG. 6 ). The dimension in thelongitudinal direction (the axial direction of the perfume cartridge200) of the perfume retainer 251 may, for example, coincide with thelength in the axial direction of the retaining area F. Furthermore, inthis case, a cross-sectional shape of the perfume retainer 251perpendicular to the longitudinal direction may approximate acircumferential cross-sectional shape of the retaining area F. That is,in a case where the perfume retainer 251 has a shape that coincides withor approximates the spatial shape of the retaining area F, the perfumeretainer 251 becomes relatively large in volume, and may accordinglyretain a relatively large amount of liquid perfume.

However, the shape of the perfume retainer 251 is not limited to such anexample. For example, the perfume retainer 251 may have a stick shape inthe form of a round bar or a square bar, or may have a trapezoidal shapeformed by die-cutting a plate-like base material. The perfume retainer251 exemplified in FIG. 7 has the same length as the length in the axialdirection of the retaining area F in the retaining space 231, and isconstituted by a polygonal plate material having a central portion thatcan be arranged close to the ventilation area A side.

(Ventilation Area and Retaining Area)

As described above, each retaining space 231 has the ventilation area Aand the retaining area F. The ventilation area A has both end portionsin the axial direction that can face the first opening 221 and thesecond opening 151. In the present embodiment, the ventilation area A ofeach retaining space 231 can face the second opening 151 of the casecover 150 via the corresponding communication hole 101 in the secondcase body 100. The retaining area F is arranged adjacent to theventilation area A and communicates with the ventilation area A, and isan area in which the perfume retainer 251 is arranged.

The ventilation area A and the retaining area F are arranged adjacent toeach other, and are divided by the first rib 235 formed on the firstcase body 211 on the rear side of the retaining space 231 and by thesecond rib 121 formed on the second case body 100 on the front side ofthe retaining space 231. The ventilation area A and the retaining area Fcommunicate with each other via a space between the two ribs 121 and235.

FIGS. 19 and 20 are views for describing the ventilation area A and theretaining area F in the retaining space 231. FIG. 19 illustrates thefirst case body 211 with the perfume retainer 251 arranged in theretaining space 231 as viewed from the front side. FIG. 20 is an axialsectional view schematically illustrating the retaining space 231 inwhich the perfume retainer 251 is arranged.

When the perfume cartridge 200 is viewed in the axial direction, thesecond rib 121 of the second case body 100 and the first rib 235 of thefirst case body 211 are arranged at a position so as to overlap eachother. In FIG. 20 , a space above an imaginary line L connecting the tworibs 121 and 235 is the retaining area F in which the perfume retainer251 is arranged, and a space below the imaginary line L is theventilation area A that can face the first opening 221 and the secondopening 151 of the case cover 150. The ventilation area A linearlyconnects the first opening 221 and the second opening 151 along theaxial direction. Thus, the ventilation resistance of air that issupplied from the first opening 221 into the retaining space 231 andflows via the communication hole 101 to the second opening 151 islowered.

The retaining area F is arranged adjacent to the ventilation area A in adirection intersecting the axial direction. The retaining area F and theventilation area A communicate with each other via the space between thetwo ribs 121 and 235. A central portion in the axial direction of theperfume retainer 251 arranged in the retaining area F is arranged in thespace between the two ribs 121 and 235 and arranged close to theventilation area A. This arrangement facilitates vaporization of liquidperfume retained by the perfume retainer 251 by a flow of air thatpasses through the ventilation area A. At this time, in a case where theperfume retainer 251 is in the form of an impregnation materialimpregnated with liquid perfume, the liquid perfume penetrates to aportion positioned on the ventilation area A side of the impregnationmaterial, and this facilitates continuous vaporization of the perfume.

The two ribs 121 and 235 have a function as a restricting portion thatlimits movement of the perfume retainer 251 toward the ventilation areaA. Furthermore, in the present embodiment, it can also be said that arecess 237 that is formed by the first rib 235 in the retaining space231 in the first case body 211 and contains an end portion of theperfume retainer 251 has a function as the restricting portion.

The perfume cartridge 200 according to the present embodiment has, on aside surface of the perfume retainer 251 arranged in the retaining areaF, the ventilation area A through which air passes. When air passesthrough the ventilation area A, the liquid perfume is vaporized, mixedwith the air, and released. At this time, movement of the perfumeretainer 251 toward the ventilation area A is limited. Consequently, anincrease in ventilation resistance of air that passes through theventilation area A is prevented. Furthermore, a space from the firstopening 221, which is an air supply port, to the second opening 151,which is a release port, is a closed space without any other open ports.With this arrangement, the perfume vaporized by ventilation can beefficiently released from the release port.

<3. Configuration Example of Scent Providing Device>

So far, the configuration example of the perfume cartridge 200 as theperfume retaining structure according to the present embodiment has beendescribed. Next, a configuration example of the scent providing device 1that is used with the perfume cartridge 200 fitted will be described.

(3.1 Example of Overall Configuration)

As illustrated in FIGS. 1 and 2 , the scent providing device 1 includesthe perfume cartridge 200 and the device main body 700. In addition tothe battery 810, the circuit board 820, and the air pump 840 included inthe housing 710, the device main body 700 includes, on the front endside of the housing 710, a prism portion 500, a rotation operationportion 600, and a base portion 740.

The prism portion 500 includes a transparent material, and is arrangedin the rotation operation portion 600. The prism portion 500 may bepress-fitted into the rotation operation portion 600, or may be joinedor fixed by appropriate means. FIGS. 21 and 22 are explanatory viewsillustrating a configuration example of the prism portion 500. FIG. 21is a front view of the prism portion 500 as viewed in the axialdirection. FIG. 22 is an axial sectional view of the prism portion 500.

The prism portion 500 has an axial hole 530 in which the perfumecartridge 200 is arranged. A positioning groove 531 that serves as apositioning element for fitting the perfume cartridge 200 is formed on apart of the outer peripheral surface of the axial hole 530. The prismportion 500 has, on the rear side, a tapered shape having a diameterthat gradually decreases toward a rear end portion. The outer surface ofthe tapered shape portion is mirror-finished to serve as a mirrorsurface portion 510. Thus, a user can visually identify, from the frontside of the scent providing device 1 via the prism portion 500,characters, designs, and the like on the outer peripheral surface of theperfume cartridge 200 reflected on the mirror surface portion 510. Aconstituent material of the prism portion 500 is not particularlylimited, as long as it has transparency after formation. For example,the prism portion 500 may be constituted by glass, crystal, ortransparent resin.

Returning to FIGS. 1 and 2 , the rotation operation portion 600 isarranged on the outer periphery of the prism portion 500 and the perfumecartridge 200. The rotation operation portion 600 has an integratedouter cylinder portion 610 and a retaining portion 620. The outercylinder portion 610 has an axial hole 611 in which the prism portion500 is fitted, and is arranged on the outer periphery of the prismportion 500. The retaining portion 620 has a spindle-shaped portion 630that has a tapered shape having a diameter that gradually increasestoward the front side, and an inner cylinder portion 640 disposedcontinuously with a rear end portion of the spindle-shaped portion 630.The spindle-shaped portion 630 is arranged on the outer periphery of themirror surface portion 510 of the prism portion 500, and the innercylinder portion 640 retains the perfume cartridge 200 in an innerperipheral portion. On the inner peripheral portion of the innercylinder portion 640, a positioning groove 641 is formed and arrangedcontinuously with the positioning groove 531 of the prism portion 500.

The case 210 of the perfume cartridge 200 is provided with theprotrusion 212 that serves as a positioning element for fitting theperfume cartridge 200. The protrusion 212 is fitted in the positioninggroove 531 on the prism portion 500 and the positioning groove 641 onthe inner cylinder portion 640. Therefore, the perfume cartridge 200 canbe positioned with respect to the rotation operation portion 600, andthe rotation operation portion 600 and the case 210 of the perfumecartridge 200 can be rotated together.

The base portion 740 has a support portion 750 and a platform portion760. The support portion 750 has a tubular shape. The platform portion760 is supported in an inner peripheral portion of the support portion750 so as to be movable in the axial direction. The platform portion 760and the support portion 750 are coupled by a heart cam mechanism 763.The platform portion 760 can be retained at an advanced position as wellas at a retracted position with respect to the support portion 750.Furthermore, a rear end portion of the perfume cartridge 200 isrotatably supported in the inner peripheral portion of the supportportion 750. Moreover, the inner cylinder portion 640 of the retainingportion 620 of the rotation operation portion 600 is rotatably supportedon the front side of the inner peripheral portion of the support portion750.

The support portion 750 is provided with a piston 855 as an engagementelement that can enter a recess 217 disposed on the outer peripheralsurface of the rear end portion of the perfume cartridge 200. The piston855 is biased toward the outer peripheral surface of the perfumecartridge 200 by a piston spring 853. Therefore, while the perfumecartridge 200 is being rotated, the piston spring 853 contracts and thepiston 855 retracts. When one of the recesses 217 coincides with theposition of the piston 855, the piston 855 enters the recess 217.Therefore, it is possible to fix the perfume cartridge 200 to apredetermined rotation position, and give a user a rotational operationfeeling.

The platform portion 760 has a fixed axle 761 that extends toward thefront side. The fixed axle 761 is inserted into the cylindrical portion155 of the case cover 150 of the perfume cartridge 200. The engagementportion (not illustrated) (the portion indicated by reference numeral769 in FIGS. 26 and 27 ) is disposed at a front end of the fixed axle761. In the cylindrical portion 155 of the case cover 150 of the perfumecartridge 200, the engagement portion engages with an engagement portion(not illustrated) formed in the cylindrical portion 155 to restrictrelative rotation between the case cover 150 and the base portion 740.Therefore, the rotation operation portion 600 and the case 210 of theperfume cartridge 200, which can rotate together, can rotate relative tothe base portion 740.

The platform portion 760 has an air supply port 765 that penetrates theplatform portion 760 in the axial direction. The air pump 840 is drivenby power supplied from the battery 810 to introduce air into the airsupply port 765. The air introduced into the air supply port 765 issupplied to one of the plurality of retaining spaces 231 disposed in theperfume cartridge 200.

Furthermore, the platform portion 760 has a protrusion 764 forpositioning. The protrusion 764 can be engaged with a locking groove(not illustrated) (a portion indicated by reference numeral 643 in FIG.27 ) formed on the inner cylinder portion 640 of the rotation operationportion 600. Specifically, the protrusion 764 of the platform portion760 engages with the locking groove on the inner cylinder portion 640 ofthe rotation operation portion 600 in a state where the platform portion760 is retained by the support portion 750 at the advanced position.Furthermore, in a state where the platform portion 760 is retained bythe support portion 750 at the retracted position, the protrusion 764 ofthe platform portion 760 is disengaged from the locking groove on theinner cylinder portion 640. Such a mechanism functions as a rotationlock mechanism that limits relative rotation between the rotationoperation portion 600 and the base portion 740 in a state where theperfume cartridge 200 has been removed from the scent providing device1. The rotation lock mechanism will be described later in detail.

The air pump 840 may be, for example, a diaphragm pump that sucks andpumps air by deforming the diaphragm by supply of an alternating currentto a piezoelectric element. The battery 810 may be a replaceable cellthat only discharges, or may be a secondary cell that can charge anddischarge. Driving of the air pump 840 is controlled by operating anoperation switch 730. For example, the operation switch 730 is pressedto turn on or off a switching element of the circuit board 820, andpower is supplied from the battery 810 to the air pump 840. Therefore,air is supplied to the perfume cartridge 200 via the air supply port765.

For example, energization may be switched between on and off every timethe operation switch 730 is repeatedly pressed, or the energization mayremain on while the operation switch 730 is being pressed. Anotherelectronic component as exemplified by a light source such as a lightemitting diode (LED) that indicates an actuation state of the scentproviding device 1 may be installed on the circuit board 820.Furthermore, a communication interface may be installed on the circuitboard 820 so that the scent providing device 1 can be operated by usinga remote controller, a smart phone, or the like.

Note that the air blowing source that supplies air toward the perfumecartridge 200 is not limited to the air pump 840, and may be, forexample, a blower of a type having a rotating fan. Furthermore, the airblowing source that supplies air toward the perfume cartridge 200 maynot be of an electrically-driven type but of a manually-operated type.In a case of where the air blowing source is of a manually-operatedtype, the battery, the operation switch, and the circuit board may beomitted.

FIGS. 23 and 24 are block diagrams illustrating examples of a systemconfiguration of the scent providing device 1. In the examples of FIGS.23 and 24 , the battery 810 is electrically connected to the air pump840 via the circuit board 820 and a switching element 830. In responseto an operation on the operation switch 730, power of the battery 810 issupplied to the air pump 840. When the air pump 840 is driven and air issupplied to the retaining space 231 in the perfume cartridge 200, liquidperfume retained by the perfume retainer arranged in the retaining space231 vaporizes, and a scent is released together with the air. In theexample of FIG. 23 , the rotation operation portion 600 can be manuallyrotated to switch which retaining space 231 in the perfume cartridge 200should be the retaining space 231 into which air supplied from the airpump 840 is to be introduced.

Furthermore, in the example of FIG. 24 , the battery 810 is electricallyconnected, via the circuit board 820 and a switching element 835, to amotor 850 that drives the rotation operation portion 600 to rotate. Forexample, in response to an operation on a rotation changeover switch bya user, power of the battery 810 is supplied to the motor 850, and therotation operation portion 600 is driven to rotate. It may thus bepossible to switch which retaining space 231 in the perfume cartridge200 should be the retaining space 231 into which air supplied from theair pump 840 is to be introduced.

(3.2. Rotation Operation)

Next, rotation operation of the perfume cartridge 200 in the scentproviding device 1 will be described with reference to FIGS. 2 and 25 .FIG. 2 illustrates a state in which the scent providing device 1 is notin use, and FIG. 25 illustrates a state in which the scent providingdevice 1 is in use.

As illustrated in FIG. 2 , when the scent providing device 1 is not inuse, the retaining spaces 231 in the perfume cartridge 200 do notcommunicate with the air supply port 765, and the pseudo space 232 isaligned with an outlet of the air supply port 765. Since the secondopening 151 of the case cover 150 is positioned in the same phase withthe air supply port 765, the pseudo space 232 is aligned with the secondopening 151. Therefore, none of the retaining spaces 231 in which theperfume retainers 251 are arranged communicate with the air supply port765 and the second opening 151, and this state prevents releasing of thescent.

As illustrated in FIG. 25 , when the scent providing device 1 is in use,the rotation operation portion 600 is rotated to cause the perfumecartridge 200 to rotate together and allow the desired retaining space231 e to communicate with the air supply port 765 via the first opening221 e. At this time, the retaining space 231 e that communicates withthe air supply port 765 communicates with the second opening 151 via thecommunication hole 101 e. A user can operate the operation switch 730 tosupply air from the air pump 840 to the retaining space 231 e so thatthe liquid perfume retained by the perfume retainer 251 (notillustrated) arranged in the retaining space 231 e may be vaporized andreleased together with the air.

(3.3. Rotation Lock Mechanism)

Next, the rotation lock mechanism of the scent providing device 1 willbe described with reference to FIGS. 26 and 27 . FIGS. 26 and 27 areperspective views illustrating only the retaining portion 620 of therotation operation portion 600 and the platform portion 760 of the baseportion 740. FIG. 27 illustrates a state of the retaining portion 620and the platform portion 760 relatively rotated by 90 degrees from thestate in FIG. 26 .

As described above, the positioning groove 641 is formed on the innerperipheral portion of the inner cylinder portion 640 of the retainingportion 620. An engagement groove 643 is formed on an outer peripheralportion of the inner cylinder portion 640, at a position rotated 180degrees from the position where the positioning groove 641 is disposed.The engagement groove 643 can be engaged with the protrusion 764disposed on the platform portion 760 of the base portion 740. Asdescribed above, the platform portion 760 of the base portion 740 issupported by the heart cam mechanism 763 so as to allow the platformportion 760 to move in the axial direction in the inner peripheralportion of the support portion 750. In a state where the platformportion 760 has moved toward the front side, the protrusion 764 of theplatform portion 760 enters and engages with the engagement groove 643on the retaining portion 620. In a state where the platform portion 760has moved toward the rear side, the protrusion 764 and the engagementgroove 643 are disengaged from each other. FIGS. 26 and 27 illustrate astate where the platform portion 760 has moved toward the rear side andthe protrusion 764 and the engagement groove 643 are disengaged fromeach other.

Operation of the rotation lock mechanism will be specifically describedwith reference to FIGS. 28 and 29 . FIG. 28 is an axial sectional viewof a front end portion of the scent providing device 1. FIG. 29 is aperspective view illustrating only the retaining portion 620 of therotation operation portion 600 and the platform portion 760 of the baseportion 740, and illustrates a perspective view of the retaining portion620 and the platform portion 760 illustrated in FIG. 28 as viewed frombelow. In each of FIGS. 28 and 29 , a state where the perfume cartridge200 is fitted in the device main body 700 is illustrated in an upperpart, and a state where the perfume cartridge 200 is being removed fromthe device main body 700 is illustrated in a lower part.

As illustrated in the upper parts of FIGS. 28 and 29 , in a state wherethe perfume cartridge 200 is fitted in the device main body 700, theheart cam mechanism 763 retains the platform portion 760 at theretracted position. At this time, the protrusion 764 of the platformportion 760 and the engagement groove 643 on the inner cylinder portion640 of the retaining portion 620 are disengaged from each other. Thus,the retaining portion 620 can now rotate relative to the platformportion 760, and the perfume cartridge 200 that rotates together withthe rotation operation portion 600 can now rotate with respect to thedevice main body 700.

On the other hand, as illustrated in the lower parts of FIGS. 28 and 29, when the perfume cartridge 200 is removed from the device main body700, the heart cam mechanism 763 retains the platform portion 760 at theadvanced position. At this time, the protrusion 764 of the platformportion 760 is engaged with the engagement groove 643 on the innercylinder portion 640 of the retaining portion 620. Thus, the retainingportion 620 and the platform portion 760 are now unable to rotaterelative to each other, and the retaining portion 620 is retained at aprearranged rotation position when the perfume cartridge 200 is attachedor detached. Therefore, the perfume cartridge 200 can be easily attachedto or detached from the device main body 700 by aligning the perfumecartridge 200 with the predetermined rotation position.

(3.4. Rotation Restricting Mechanism)

Next, a rotation restricting mechanism for the case 210 and the casecover 150 of the perfume cartridge 200 will be described. The perfumecartridge 200 according to the present embodiment has the rotationrestricting mechanism that limits relative rotation between the case 210and the case cover 150 in a state where the perfume cartridge 200 is notfitted in the device main body 700.

In the axial sectional view of the perfume cartridge 200 illustrated inFIG. 6 , the engagement protrusion 159 formed on the rear end surface ofthe disk portion 153 of the case cover 150 has entered the communicationhole 101 c in the second case body 100. In this state, rotation of thecase cover 150 with respect to the case 210 is limited.

FIG. 30 is a view for describing operation of the rotation restrictingmechanism when the perfume cartridge 200 is fitted in the device mainbody 700. As described above, in a state where the case cover 150 andthe case 210 are assembled, the locking claws 156 disposed on an outerperipheral portion of the cylindrical portion 155 of the case cover 150are locked to the step portion between the small-diameter portion 111 aand the large-diameter portion 111 b of the axial hole 111 disposed onthe second case body 100. At this time, a gap S that is at least equalto or larger than the height of the engagement protrusion 159 is formedbetween the locking claws 156 and the step portion (see the viewillustrated in an upper part of FIG. 30 ).

When the perfume cartridge 200 is fitted, the engagement portion 769disposed at the front end of the fixed axle 761 of the platform portion760 is inserted into the engagement recess 157 disposed in the bottomportion of the internal space in the cylindrical portion 155 of the casecover 150. At this time, for example, the engagement portion 769 islightly press-fitted into the engagement recess 157, and the case cover150 moves toward the front by the length of the gap S described above.As a result, the engagement protrusion 159 of the case cover 150illustrated in FIG. 6 moves to a position nearer to the front than thecommunication hole 101 c, and the case cover 150 can now rotate withrespect to the case 210. Therefore, the case 210 can rotate in a statewhere the perfume cartridge 200 is fitted in the device main body 700.

With the rotation restricting mechanism like this, when the perfumecartridge 200 is not in use, the rotation position of the second opening151 of the case cover 150 is aligned with the position where the pseudospace 232 is arranged in the case 210 to ensure that none of theretaining spaces 231 in which the perfume retainers 251 are arranged areopened to the outside via the second opening 151. Thus, leakage of theperfume can be prevented when the perfume cartridge 200 is not in use.

Note that the engagement protrusion 159 and the communication hole 101that constitute the rotation restricting mechanism are an example of anengagement portion and an engaged portion, and the engagement portionand the engaged portion are not limited to such an example. Theengagement portion and the engaged portion are only required to beengaged before the perfume cartridge 200 is fitted in the device mainbody 700 and disengaged from each other after the perfume cartridge 200has been fitted in the device main body 700.

<4. Method of Manufacturing Perfume Cartridge (Perfume RetainingStructure)>

Next, an example of a method of manufacturing the perfume cartridge 200according to the present embodiment illustrated in FIGS. 3 to 6 will bedescribed. The method of manufacturing the perfume cartridge 200according to the present embodiment includes first to fourth steps. Themethod of manufacturing the perfume cartridge 200 will be describedbelow in order of steps with reference to FIGS. 31 to 33 FIGS. 31 to 33are schematic views illustrating a vicinity of one of the plurality ofretaining spaces 231 constituting the perfume cartridge 200.

(4.1. First Step)

In the first step, the first case body 211 exemplified in FIGS. 8 to 10and the like is produced. In the first case body 211, the plurality ofretaining spaces 231 and the pseudo space 232 are formed. The first rib235 is formed on the rear end side of each retaining space 231 to dividethe retaining space 231 into the ventilation area A in which the firstopening 221 is disposed, and the retaining area F that is arrangedadjacent to the ventilation area A and communicates with the ventilationarea A. The method of producing the first case body 211 is notparticularly limited. For example, the first case body 211 may be moldedby pouring a molten resin material into a mold and solidifying the resinmaterial. The resin material used is not particularly limited, but ispreferably a resin material having resistance to liquid perfume.

(4.2. Second Step)

In the second step, the perfume retainer 251 is stored in the retainingarea F in the first case body 211. For example, as illustrated in FIG.31 , each perfume retainer 251 that already retains liquid perfume isinserted into the retaining area F in the corresponding retaining space231. At this time, a rear end portion of the perfume retainer 251 isinserted into the recess 237 formed by the first rib 235. Liquidperfumes retained by the perfume retainers 251 contained in thecorresponding retaining spaces 231 may be all the same, or some or allof the liquid perfumes may be different from each other.

Note that, in the second step, it is also possible to insert, into theretaining area F, an impregnation material that does not retain liquidperfume, and then apply liquid perfume to impregnate the impregnationmaterial with the liquid perfume.

(4.3. Third Step)

In the third step, the case 210 is produced by attaching the second casebody 100 to the first case body 211 in which the perfume retainers 251are arranged in all the retaining spaces 231. For example, asillustrated in FIG. 32 , the second case body 100 has the plurality ofcommunication holes 101 that communicates with the correspondingretaining spaces 231 in the first case body 211, and the second ribs 121that are erected in the corresponding retaining spaces 231. By attachingthe second case body 100 to the first case body 211, movement of eachperfume retainer 251 toward the ventilation area A is restricted by thefirst rib 235 and the second rib 121.

(4.4. Fourth Step)

In the fourth step, the case cover 150 having the second opening 151 isattached to the case 210. As illustrated in FIG. 33 , the case cover 150is provided with the second opening 151, and the case cover 150 isattached to the case 210 so as to allow relative rotation with respectto each other. Thus, the rotation position of the case cover 150 withrespect to the case 210 is switched to allow the second opening 151 tocommunicate with one of the retaining spaces 231 via the correspondingcommunication hole 101. Although not illustrated, at the time ofmanufacturing, the second opening 151 may be aligned with and attachedto a position corresponding to the pseudo space 232 disposed in thefirst case body 211. This arrangement prevents leakage of the scent fromany one of the retaining spaces 231 when the perfume cartridge 200 isnot in use.

As described above, in the perfume cartridge 200 according to thepresent embodiment, the retaining space 231 in the perfume cartridge200, in which the perfume retainer 251 is arranged, has the ventilationarea A and the retaining area F. The ventilation area A can face thefirst opening 221 and the second opening 151. The retaining area F isarranged adjacent to the ventilation area A and communicates with theventilation area A, and the perfume retainer 251 is arranged in theretaining area F. The perfume cartridge 200 like this includes, as therestricting portion that limits movement of the perfume retainer 251toward the ventilation area A, the first rib 235, the recess 237 formedby the first rib 235, and the second rib 121. Thus, it is possible toreduce a possibility that the perfume retainer 251 enters theventilation area A and hinders a flow of air that passes through theventilation area A. Consequently, ventilation resistance of air thatpasses through the ventilation area A is reduced, and a decrease in flowrate of the scent released from the scent providing device 1 isprevented.

Furthermore, in the perfume cartridge 200 according to the presentembodiment, the restricting portion is constituted by the first rib 235and the second rib 121 formed on the first case body 211 and the secondcase body 100, respectively. With this arrangement, at the time ofmanufacturing of the perfume cartridge 200, a structure that limitsmovement of the perfume retainer 251 can be easily formed byappropriately arranging the perfume retainer 251 in the retaining space231 and appropriately assembling the first case body 211 and the secondcase body 100. In particular, the perfume cartridge 200 according to thepresent embodiment includes the plurality of retaining spaces 231 inwhich the perfume retainers 251 are arranged. Thus, it is significantthat the structure that limits movement of the perfume retainer 251 ineach retaining space 231 can be easily formed by appropriately arrangingthe perfume retainer 251 in the retaining space 231 and appropriatelyassembling the first case body 211 and the second case body 100.

Furthermore, in the perfume cartridge 200 according to the presentembodiment, the case cover 150 has the engagement protrusion 159 that isengaged with the communication hole 101 c in the second case body 100while the perfume cartridge 200 is not fitted in the device main body700 and that is disengaged from the communication hole 101 c in thesecond case body 100 while the perfume cartridge 200 is fitted in thedevice main body 700. With this arrangement, the retaining space 231 inwhich the perfume retainer 251 is arranged can be retained as a closedspace when the perfume cartridge 200 is not in use, and leakage of thescent is prevented when the perfume cartridge 200 is not in use.

The preferred embodiment of the present disclosure has been describedabove in detail with reference to the accompanying drawings, but thetechnical scope of the present disclosure is not limited to such anexample. It is obvious that a person having ordinary knowledge in thetechnical field of the present disclosure can come up with variouschanges and modifications within the scope of the technical ideadescribed in the claims, and such various changes and modifications arenaturally understood to belong to the technical scope of the presentdisclosure.

For example, in the embodiment described above, movement of the perfumeretainer 251 toward the ventilation area A is limited by the first rib235 and the second rib 121 that divide the retaining space 231 into theventilation area A and the retaining area F. However, the technology ofthe present disclosure is not limited to such an example. For example,in a case where the perfume retainer 251 has adhesiveness, the perfumeretainer 251 may be fixed to an inner wall of the retaining space 231,more specifically, in an area that does not face the first opening 221and the second opening 151. Thus, movement of the perfume retainer 251toward the ventilation area A may be limited. Even if the ventilationarea A and the retaining area F are divided in this way, the ventilationresistance of air that passes through the ventilation area A is reduced,and it is possible to prevent a decrease in flow rate of the scentreleased from the scent providing device 1.

Furthermore, in the embodiment described above, the ventilation area Alinearly connects the first opening 221 and the second opening 151 alongthe axial direction, and the retaining area F is arranged adjacent tothe ventilation area A in a direction intersecting the axial direction.However, the technology of the present disclosure is not limited to suchan example. For example, the ventilation area A may be disposed spirallyor tortuously from the first opening 221 toward the second opening 151,and the retaining area F may be arranged partially or entirely adjacentto the ventilation area A so as not to hinder a flow of air in theventilation area A. Even if the ventilation area A and the retainingarea F are arranged in this way, the ventilation resistance of air thatpasses through the ventilation area A is reduced Thus, a decrease inflow rate of the scent released from the scent providing device 1 isprevented.

Note that the following configurations also belong to the technicalscope of the present disclosure.

(1) A perfume retaining structure including:

a perfume retainer;

a retaining space in which the perfume retainer is arranged; and

a first opening and a second opening that allow the retaining space tobe opened to the outside,

in which the retaining space has

a ventilation area that faces the first opening and the second opening,and

a retaining area that is arranged adjacent to the ventilation area andcommunicates with the ventilation area, the perfume retainer beingarranged in the retaining area.

(2) The perfume retaining structure according to (1), in which theventilation area linearly connects the first opening and the secondopening along a predetermined direction, and the retaining area isarranged adjacent to the ventilation area in a direction intersectingthe predetermined direction.

(3) The perfume retaining structure according to (1) or (2), furtherincluding a restricting portion that limits movement of the perfumeretainer toward the ventilation area.

(4) The perfume retaining structure according to (3), in which therestricting portion is a recess that contains a part of the perfumeretainer.

(5) The perfume retaining structure according to (3), in which therestricting portion is a rib that extends between the ventilation areaand the retaining area.

(6) The perfume retaining structure according to any one of (1) to (5),in which the perfume retaining structure includes a plurality of theretaining spaces.

(7) The perfume retaining structure according to any one of (1) to (6),in which the perfume retaining structure includes a perfume cartridge tobe fitted in a scent providing device.

(8) The perfume retaining structure according to any one of (1) to (7),further including:

a case that has the retaining space and the first opening; and

a case cover that is attached to the case and has the second opening.

(9) The perfume retaining structure according to (8), further includinga restricting portion that limits movement of the perfume retainertoward the ventilation area.

(10) The perfume retaining structure according to (9), in which therestricting portion is a recess that is disposed on the case andcontains a part of the perfume retainer.

(11) The perfume retaining structure according to (9), in which

the case includes a first case body that has the retaining space, and asecond case body that is attached to the first case body and has acommunication hole that communicates with the retaining space, and

the restricting portion is a rib that is formed on the second case bodyand extends into the retaining space in the first case body.

(12) The perfume retaining structure according to any one of (8) to(11), in which

the case has a plurality of the retaining spaces and the first openings,

the case cover has the second opening,

the case cover is rotatably attached to the case, and

the second opening faces one of the plurality of the retaining spaces.

(13) The perfume retaining structure according to (12), in which

the perfume retaining structure includes a perfume cartridge to befitted in a scent providing device, and

the case cover has an engagement portion that is engaged with an engagedportion of the case while the perfume cartridge is not fitted in thescent providing device and that is disengaged from the engaged portionof the case while the perfume cartridge is fitted in the scent providingdevice.

(14) The perfume retaining structure according to (12) or (13), in whichthe retaining spaces are arranged at regular intervals around a centralaxis of the perfume retaining structure.

(15) A method of manufacturing a perfume retaining structure, including:

producing a first case body provided with a retaining space that has aventilation area provided with a first opening, and a retaining areathat is divided from the ventilation area by a first rib, arrangedadjacent to the ventilation area, and communicates with the ventilationarea;

storing a perfume retainer or a base material of the perfume retainer inthe retaining area in the first case body;

producing a case by attaching, to the first case body, a second casebody that has a communication hole that communicates with the retainingspace in the first case body and a second rib that is erected in theretaining space in the first case body, the first rib and the second riblimiting movement of the perfume retainer toward the ventilation area;and

attaching, to the case, a case cover that has a second opening.

(16) A scent providing device including:

a perfume retaining structure that has a perfume retainer, a retainingspace in which the perfume retainer is arranged, and a first opening anda second opening that allow the retaining space to be opened to theoutside; and

an air blowing source that supplies air to the retaining space,

in which the retaining space has

a ventilation area that faces the first opening and the second opening,and

a retaining area that is arranged adjacent to the ventilation area andcommunicates with the ventilation area, the perfume retainer beingarranged in the retaining area.

REFERENCE SIGNS LIST

-   1 Scent providing device-   100 Second case body-   101 Communication hole-   121 Second rib (restricting portion)-   150 Case cover-   151 Second opening-   153 Disk portion-   155 Cylindrical portion-   159 Engagement protrusion-   200 Perfume cartridge-   210 Case-   211 First case body-   221 First opening-   231 Retaining space-   235 First rib (restricting portion)-   237 Recess (restricting portion)-   251 Perfume retainer-   700 Device main body-   Ventilation area A-   Retaining area F

1. A perfume retaining structure comprising: a perfume retainer; aretaining space in which the perfume retainer is arranged; and a firstopening and a second opening that allow the retaining space to be openedto outside, wherein the retaining space has a ventilation area thatfaces the first opening and the second opening, and a retaining areathat is arranged adjacent to the ventilation area and communicates withthe ventilation area, the perfume retainer being arranged in theretaining area.
 2. The perfume retaining structure according to claim 1,wherein the ventilation area linearly connects the first opening and thesecond opening along a predetermined direction, and the retaining areais arranged adjacent to the ventilation area in a direction intersectingthe predetermined direction.
 3. The perfume retaining structureaccording to claim 1, further comprising a restricting portion thatlimits movement of the perfume retainer toward the ventilation area. 4.The perfume retaining structure according to claim 3, wherein therestricting portion is a recess that contains a part of the perfumeretainer.
 5. The perfume retaining structure according to claim 3,wherein the restricting portion is a rib that extends between theventilation area and the retaining area.
 6. The perfume retainingstructure according to claim 1, wherein the perfume retaining structureincludes a plurality of the retaining spaces.
 7. The perfume retainingstructure according to claim 1, wherein the perfume retaining structurecomprises a perfume cartridge to be fitted in a scent providing device.8. The perfume retaining structure according to claim 1, furthercomprising: a case that has the retaining space and the first opening;and a case cover that is attached to the case and has the secondopening.
 9. The perfume retaining structure according to claim 8,further comprising a restricting portion that limits movement of theperfume retainer toward the ventilation area.
 10. The perfume retainingstructure according to claim 9, wherein the restricting portion is arecess that is disposed on the case and contains a part of the perfumeretainer.
 11. The perfume retaining structure according to claim 9,wherein the case includes a first case body that has the retainingspace, and a second case body that is attached to the first case bodyand has a communication hole that communicates with the retaining space,and the restricting portion is a rib that is formed on the second casebody and extends into the retaining space in the first case body. 12.The perfume retaining structure according to claim 8, wherein the casehas a plurality of the retaining spaces and the first openings, the casecover has the second opening, the case cover is rotatably attached tothe case, and the second opening faces one of the plurality of theretaining spaces.
 13. The perfume retaining structure according to claim12, wherein the perfume retaining structure comprises a perfumecartridge to be fitted in a scent providing device, and the case coverhas an engagement portion that is engaged with an engaged portion of thecase while the perfume cartridge is not fitted in the scent providingdevice and that is disengaged from the engaged portion of the case whilethe perfume cartridge is fitted in the scent providing device.
 14. Theperfume retaining structure according to claim 12, wherein the retainingspaces are arranged at regular intervals around a central axis of theperfume retaining structure.
 15. A method of manufacturing a perfumeretaining structure, comprising: producing a first case body providedwith a retaining space that has a ventilation area provided with a firstopening, and a retaining area that is divided from the ventilation areaby a first rib, arranged adjacent to the ventilation area, andcommunicates with the ventilation area; storing a perfume retainer or abase material of the perfume retainer in the retaining area in the firstcase body; producing a case by attaching, to the first case body, asecond case body that has a communication hole that communicates withthe retaining space in the first case body and a second rib that iserected in the retaining space in the first case body, the first rib andthe second rib limiting movement of the perfume retainer toward theventilation area; and attaching, to the case, a case cover that has asecond opening.
 16. A scent providing device comprising: a perfumeretaining structure that has a perfume retainer, a retaining space inwhich the perfume retainer is arranged, and a first opening and a secondopening that allow the retaining space to be opened to outside; and anair blowing source that supplies air to the retaining space, wherein theretaining space has a ventilation area that faces the first opening andthe second opening, and a retaining area that is arranged adjacent tothe ventilation area and communicates with the ventilation area, theperfume retainer being arranged in the retaining area.